The doomsday is coming and zombies are rampant. Xu Ranxuan awakens the "base core" system and binds the abandoned air-raid shelter at the beginning. While others were struggling to survive in the ruins, he had begun planning city walls, building farms, and developing weapons. It wasn't until he rescued Xia Wanqing, the woman who claimed to be from the future, that he discovered that there was a huge conspiracy hidden behind this doomsday that could subvert everything.